<?php

declare(strict_types=1);

namespace app\Service;

class Demo {

    private $_id = 0;

    public function __construct() {

    }

    public function test1() {
    
        $this->_id++;
        return $this->_id.' - '.\Hyperf\Utils\Coroutine::id();
    }

    public static function test2() {

        return 'test2';
    }
}




